Andy M. Chan, DO
Internal Medicine Physician · San Diego, CA
Andy M. Chan, DO is an internal medicine physician with a practice address in San Diego, California, and NPI 1104480912, issued on Apr 26, 2019. Check the license (California 20A20352, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Andy M. Chan
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A20352 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4077 Fifth Ave # Mer35, San Diego, CA 92103
- Phone
- (619) 294-8111
- Enumerated
- Apr 26, 2019
- Record last updated
- Nov 13, 2023
- Medicare enrollment
- Enrolled (PECOS I20230411000580); accepts Medicare assignment
- Medical or professional school
- Touro Un College Of Osteopathic Medicine, Vallejo, 2020
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 4077 Fifth Ave # Mer35
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Trenton Bawcum, MDDiagnostic Radiology Physician1821592601
- Pranay Bonagiri, DOInternal Medicine Physician1104403591
- Jenna Carlson, DOHospitalist Physician1477180172
Verify Andy M. Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A20352Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average internal medicine physician in 2024
348 Medicare Part D claims for 111 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 28 claims were for opioids.
Most prescribed
- Prednisone13 claims
- Atorvastatin Calcium11 claims
- Furosemide11 claims
- Hydrocodone-Acetaminophen11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Scripps Health Inpatient Providers Medical Group IncChula Vista, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
961 internal medicine physician records list a practice address in San Diego
They are 961 of the 52,937 NPPES records with a practice address in San Diego, and 17,696 internal medicine physician records in California.
All 961 in San Diego → All 17,696 in California → Every provider in San Diego →
Other internal medicine physician records in California
- Jacob Aaron, MDSan Francisco, CA1407202518
- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Andy M. Chan, DO's NPI number?
Andy M. Chan, DO's National Provider Identifier (NPI) is 1104480912, issued on Apr 26, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Andy M. Chan, DO located?
The NPPES record lists a practice address at 4077 Fifth Ave # Mer35, San Diego, CA, 92103. Phone: (619) 294-8111. Providers update this record themselves, so call before visiting.
How can I verify Andy M. Chan, DO's license?
NPPES lists California license number 20A20352, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Andy M. Chan, DO prescribe under Medicare Part D?
In 2024, Andy M. Chan, DO had 348 Medicare Part D claims for 111 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.